1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 *  linux/arch/arm/mach-pxa/idp.c
  4 *
  5 *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
  6 *
  7 *  2001-09-13: Cliff Brake <cbrake@accelent.com>
  8 *              Initial code
  9 *
 10 *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
 11 *  		<http://www.vibren.com> <http://bec-systems.com>
 12 *              Updated for 2.6 kernel
 13 */
 14
 15#include <linux/init.h>
 16#include <linux/interrupt.h>
 17#include <linux/irq.h>
 18#include <linux/leds.h>
 19#include <linux/platform_device.h>
 20#include <linux/fb.h>
 21
 22#include <asm/setup.h>
 23#include <asm/memory.h>
 24#include <asm/mach-types.h>
 25#include <asm/irq.h>
 26
 27#include <asm/mach/arch.h>
 28#include <asm/mach/map.h>
 29
 30#include "pxa25x.h"
 31#include "idp.h"
 32#include <linux/platform_data/video-pxafb.h>
 33#include <linux/platform_data/mmc-pxamci.h>
 34#include <linux/smc91x.h>
 35
 36#include "generic.h"
 37#include "devices.h"
 38
 39/* TODO:
 40 * - add pxa2xx_audio_ops_t device structure
 41 * - Ethernet interrupt
 42 */
 43
 44static unsigned long idp_pin_config[] __initdata = {
 45	/* LCD */
 46	GPIOxx_LCD_DSTN_16BPP,
 47
 48	/* BTUART */
 49	GPIO42_BTUART_RXD,
 50	GPIO43_BTUART_TXD,
 51	GPIO44_BTUART_CTS,
 52	GPIO45_BTUART_RTS,
 53
 54	/* STUART */
 55	GPIO46_STUART_RXD,
 56	GPIO47_STUART_TXD,
 57
 58	/* MMC */
 59	GPIO6_MMC_CLK,
 60	GPIO8_MMC_CS0,
 61
 62	/* Ethernet */
 63	GPIO33_nCS_5,	/* Ethernet CS */
 64	GPIO4_GPIO,	/* Ethernet IRQ */
 65};
 66
 67static struct resource smc91x_resources[] = {
 68	[0] = {
 69		.start	= (IDP_ETH_PHYS + 0x300),
 70		.end	= (IDP_ETH_PHYS + 0xfffff),
 71		.flags	= IORESOURCE_MEM,
 72	},
 73	[1] = {
 74		.start	= PXA_GPIO_TO_IRQ(4),
 75		.end	= PXA_GPIO_TO_IRQ(4),
 76		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 77	}
 78};
 79
 80static struct smc91x_platdata smc91x_platdata = {
 81	.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
 82		 SMC91X_USE_DMA | SMC91X_NOWAIT,
 83	.pxa_u16_align4 = true,
 84};
 85
 86static struct platform_device smc91x_device = {
 87	.name		= "smc91x",
 88	.id		= 0,
 89	.num_resources	= ARRAY_SIZE(smc91x_resources),
 90	.resource	= smc91x_resources,
 91	.dev.platform_data = &smc91x_platdata,
 92};
 93
 94static void idp_backlight_power(int on)
 95{
 96	if (on) {
 97		IDP_CPLD_LCD |= (1<<1);
 98	} else {
 99		IDP_CPLD_LCD &= ~(1<<1);
100	}
101}
102
103static void idp_vlcd(int on)
104{
105	if (on) {
106		IDP_CPLD_LCD |= (1<<2);
107	} else {
108		IDP_CPLD_LCD &= ~(1<<2);
109	}
110}
111
112static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
113{
114	if (on) {
115		IDP_CPLD_LCD |= (1<<0);
116	} else {
117		IDP_CPLD_LCD &= ~(1<<0);
118	}
119
120	/* call idp_vlcd for now as core driver does not support
121	 * both power and vlcd hooks.  Note, this is not technically
122	 * the correct sequence, but seems to work.  Disclaimer:
123	 * this may eventually damage the display.
124	 */
125
126	idp_vlcd(on);
127}
128
129static struct pxafb_mode_info sharp_lm8v31_mode = {
130	.pixclock	= 270000,
131	.xres		= 640,
132	.yres		= 480,
133	.bpp		= 16,
134	.hsync_len	= 1,
135	.left_margin	= 3,
136	.right_margin	= 3,
137	.vsync_len	= 1,
138	.upper_margin	= 0,
139	.lower_margin	= 0,
140	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
141	.cmap_greyscale	= 0,
142};
143
144static struct pxafb_mach_info sharp_lm8v31 = {
145	.modes          = &sharp_lm8v31_mode,
146	.num_modes      = 1,
147	.cmap_inverse	= 0,
148	.cmap_static	= 0,
149	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
150			  LCD_AC_BIAS_FREQ(255),
151	.pxafb_backlight_power = &idp_backlight_power,
152	.pxafb_lcd_power = &idp_lcd_power
153};
154
155static struct pxamci_platform_data idp_mci_platform_data = {
156	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
157};
158
159static void __init idp_init(void)
160{
161	printk("idp_init()\n");
162
163	pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
164	pxa_set_ffuart_info(NULL);
165	pxa_set_btuart_info(NULL);
166	pxa_set_stuart_info(NULL);
167
168	platform_device_register(&smc91x_device);
169	//platform_device_register(&mst_audio_device);
170	pxa_set_fb_info(NULL, &sharp_lm8v31);
171	pxa_set_mci_info(&idp_mci_platform_data);
172}
173
174static struct map_desc idp_io_desc[] __initdata = {
175  	{
176		.virtual	=  IDP_COREVOLT_VIRT,
177		.pfn		= __phys_to_pfn(IDP_COREVOLT_PHYS),
178		.length		= IDP_COREVOLT_SIZE,
179		.type		= MT_DEVICE
180	}, {
181		.virtual	=  IDP_CPLD_VIRT,
182		.pfn		= __phys_to_pfn(IDP_CPLD_PHYS),
183		.length		= IDP_CPLD_SIZE,
184		.type		= MT_DEVICE
185	}
186};
187
188static void __init idp_map_io(void)
189{
190	pxa25x_map_io();
191	iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
192}
193
194/* LEDs */
195#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
196struct idp_led {
197	struct led_classdev     cdev;
198	u8                      mask;
199};
200
201/*
202 * The triggers lines up below will only be used if the
203 * LED triggers are compiled in.
204 */
205static const struct {
206	const char *name;
207	const char *trigger;
208} idp_leds[] = {
209	{ "idp:green", "heartbeat", },
210	{ "idp:red", "cpu0", },
211};
212
213static void idp_led_set(struct led_classdev *cdev,
214		enum led_brightness b)
215{
216	struct idp_led *led = container_of(cdev,
217			struct idp_led, cdev);
218	u32 reg = IDP_CPLD_LED_CONTROL;
219
220	if (b != LED_OFF)
221		reg &= ~led->mask;
222	else
223		reg |= led->mask;
224
225	IDP_CPLD_LED_CONTROL = reg;
226}
227
228static enum led_brightness idp_led_get(struct led_classdev *cdev)
229{
230	struct idp_led *led = container_of(cdev,
231			struct idp_led, cdev);
232
233	return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
234}
235
236static int __init idp_leds_init(void)
237{
238	int i;
239
240	if (!machine_is_pxa_idp())
241		return -ENODEV;
242
243	for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
244		struct idp_led *led;
245
246		led = kzalloc(sizeof(*led), GFP_KERNEL);
247		if (!led)
248			break;
249
250		led->cdev.name = idp_leds[i].name;
251		led->cdev.brightness_set = idp_led_set;
252		led->cdev.brightness_get = idp_led_get;
253		led->cdev.default_trigger = idp_leds[i].trigger;
254
255		if (i == 0)
256			led->mask = IDP_HB_LED;
257		else
258			led->mask = IDP_BUSY_LED;
259
260		if (led_classdev_register(NULL, &led->cdev) < 0) {
261			kfree(led);
262			break;
263		}
264	}
265
266	return 0;
267}
268
269/*
270 * Since we may have triggers on any subsystem, defer registration
271 * until after subsystem_init.
272 */
273fs_initcall(idp_leds_init);
274#endif
275
276MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
277	/* Maintainer: Vibren Technologies */
278	.map_io		= idp_map_io,
279	.nr_irqs	= PXA_NR_IRQS,
280	.init_irq	= pxa25x_init_irq,
281	.handle_irq	= pxa25x_handle_irq,
282	.init_time	= pxa_timer_init,
283	.init_machine	= idp_init,
284	.restart	= pxa_restart,
285MACHINE_END